Channels: fail closed when Slack/Discord config is missing

src/discord/monitor/provider.group-policy.test.ts

@@ -0,0 +1,29 @@
+import { describe, expect, it } from "vitest";
+import { __testing } from "./provider.js";
+
+describe("resolveDiscordRuntimeGroupPolicy", () => {
+  it("fails closed when channels.discord is missing and no defaults are set", () => {
+    const resolved = __testing.resolveDiscordRuntimeGroupPolicy({
+      providerConfigPresent: false,
+    });
+    expect(resolved.groupPolicy).toBe("allowlist");
+    expect(resolved.providerMissingFallbackApplied).toBe(true);
+  });
+
+  it("keeps open default when channels.discord is configured", () => {
+    const resolved = __testing.resolveDiscordRuntimeGroupPolicy({
+      providerConfigPresent: true,
+    });
+    expect(resolved.groupPolicy).toBe("open");
+    expect(resolved.providerMissingFallbackApplied).toBe(false);
+  });
+
+  it("respects explicit provider policy", () => {
+    const resolved = __testing.resolveDiscordRuntimeGroupPolicy({
+      providerConfigPresent: false,
+      groupPolicy: "disabled",
+    });
+    expect(resolved.groupPolicy).toBe("disabled");
+    expect(resolved.providerMissingFallbackApplied).toBe(false);
+  });
+});